Improvement in printer s ink



UNI TED STATES PATENT OFFICEO I SAMUEL H. TURNER, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN PRINTERS INK,

Specification forming part of Letters Patent No. 10,006, dated Sept-ember .6, 1853.

To all whom it may concern:

Be it known that I, SAML. H. TURNER, of Brooklym'in the county of Kings and State of New York, have invented a new and useful Improvement in the Manufacture of Printing- Ink and Varnish, of which the following is a full, clear, and exact dcseriptioni My improvement consists in the employmentofcolophonic tar,in connection with other in gredients,inthemanufacture of printin g-ink,

and also in the employment of this material (001- ophonictar) as a printing-ink varnish, What I denominate colophonic tar is the tarryrea siduum remaining in stills, or what is called the cucurbitfafter the various stages of distillation commonly employed in obtaining colophonic oil,

In the manufacture of colophonic oil it is usual to subject colophony to three successive distillations, in which it is thoroughly decomposed, and its elements to a very great degree separated. After'the completion of each separate distillation a tarry residuum always re mains in the still, which, after being partially cooled, is drawn out. The second residuum I have usually found to be best adapted for making printing-ink. The long and intense heatto which it is subjected (being in a close vessel some six hours, more or less, with a heat varying from 500 to 700) completely prepares it for the purpose and dispels from it the injurious properties, which are separated and passed ofi' with the oily vapors.

Oolophonie tar, as I prepare it, is unlike all.

the oil ypreparations for-printin g-ink, in that it may be used without the-admixture of rosin, andlis of itself an excellent printing-ink varms Printing-inh may be prepared with the fol lowingingredientsinthefollowingproportions, viz: colophonic tar, fourteen pounds; fine lamp-black, three pounds; fine pulverized indigo-blue, ei ghtounces; fine pulverized Indian red,four ounces 5 yellow rosin soap, one pound. I cut the soap in thin slices and dissolve it in the colophonic tar by the aid of heat. I then allow the mixture to cool down to a temperature of about 100. The pigments are then carefully stirred in, so as to produce a perfect incorporation of all the ingredients. This mixture is next ground in Bogardus patent eccentrio mill, orotherwise, after which the ink may be put up for use. 1 1n the manufacture of printing-ink it will doubtless befouud expedient toincorporateingredicnts'not hereinnamed, as well as to vary those that are enumerated, according to the colorand quality of the ink desired, which will be regulated agreeable to the judgment and skill of the artiticcr. I also use this material (the colophonic tar) as a varnish to modify the condition of printing-ink to suit the temperature of the n'eather'and the kind of work to be executed.

What I claim as my invention, and desire to secure by Letters Patent, is-- The employment of colophonic tar, produced and combined substantially as herein stated,

both in the manufacture of printing-ink and also as a varnish used by printers to modify the condition of their ink to suit the tempera ture of the weather and the kind of work to be executed, all as herein specified.

. sAMU'nnn. TURNER.

Witnesses: v

I. BIeELow, J. Bnoons. 

